It sounds like you were & are not married to the mother. It also sounds like you do not have any court orders for the child. In this case, you would need to file a Petition to Establish Parental Relationship with the court. This would address custody, visitation and support for the child. If you wish to address the custody quickly, you would also file a Request for Order.
If you & the mom do not agree on a parenting schedule then the judge will make a ruling.
Answered on Sep 15th, 2013 at 8:06 PM